Calculating-machine.



M. BARR & E. R. CLARKE.

' CALCULATING MACHINE.

APPLICATION FILED MAB.26, 1910, 7 1 075 003 Patented 0013.7, 1913.

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,a/Z/U WWW M. BARR & E. R. CLARKE.

CALCULATING MAGHINE.

A'PPLIOATI'O-N'IILED'IMAR.26, 1910.

Patented Oct. 7, 1913.

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M. BARR '& E. R. CLARKE. "CALCULATING MACHINE.

APPLIOATION FILED MAEKZG 1910v Patented Oct. '2", 1913 UNITED STATES PATENT OFFICE.

Manx BARB. Am) EDWARD RUSSELL CLARKE, or

DIRECT AND MESNE ASSIGNMENTS, 'r'o THE LONDON, ENGLAND.

To all whom it may concern.

Be it known that We, MARK BARR and ED- wAno RUssELL CLARKE, subjects of the King of Great Britain, and residents of London, England, have invented certain new and useful Improvements in Calculating-Machines; and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this speci- 15 CWtS-, 3 (11's., 17 lbs. at 9126. per cwt.

In the machine the subject of our invention, we use, as has already been proposed in such machines, mechanism which performs the process of multiplication by a method representing mechanically the arithmetical process of multiplication by partial products placed in appropriate columns. and then adding such columns to obtain the result.

Our invention differs from previous inventions (1) in providing simplified means for the setting of the mechanicalrepresentations of the various partial products into position for the performance of a particular operation, (2) in the means adopted'for the summation of the partial products, whereby such summation is effected simultaneously, (3) and in the means for avoiding or greatly reducing the operations of carrying subsequent upon such addition.

The invention further consists in the adaptation of the known use of mechanical representations of all possible partial prodnets, to the multiplication of quantities expressed in a compound system of units.

In operating the machine the subject of our invention, the setting up in the machine of the digits of the multiplier and multiplicand is caused to set the mechanical representations of the various partial products into the appropriate positions and then by moving an operating handle the said pa'rtial products are simultaneously added, and the result of the calculations is exhibited in the machine.

Specification of Letters Patent. Application filed March 26, 1910.

LONDON, ENGLAND, ASSIGNORS, BY AUTOKAL SYNDICATE LIMITED, OF

oA ooL-ArIiIc-mAcHmE.

Patented Oct. '7, 1913. Serial No. 551,717.

Throughout the specification the multiplier will be denoted by X and the multiplicand by ,Y and the digits of the multiplier by a, b, 0, (Z, etc., and those of the multiplic'and by 72, (7, 1', 8, etc.

v The machine therefore has to deal with the partial products of abc things at a price 'of pm. The complete multiplication as carried out in the machine the subject of this invention and working within the above limits requires mechanism to deal with the partial products which are all arranged mechanically in the machine in the appropriate columns to give them their correct signifi .c'ant figures.

The principle of performing the process of multiplication bypartial products placed in appropriate columns, and then adding such columns to obtain the result is the principle adopted in the machine the subject of this invention, but we do not claim this as part of our invention.

In order to carry this into effect in a machine a series of mechanical representations of the multiplication table are employed. Take for instance the multiplication table from 0 O up to 9X9; This may be arranged in the form of two tables as shown in the accompanying table. where A represents the units and B the tens of the product of any such multiplication. The reason or splitting the multiplication into two parts, a tens part and a' units part, is because the tens of the product has to be added in a different column from the units of the product, and is therefore best represented by a separate mechanical entity. Such a mechanical representation of the multiplication. table' from 0X0 to 9X9 is not in itself novel and a number of forms are known in which it may be made and which are fully set out in the U. S. Patent specification of Saunders No. 775,939.

Tablel l.

l Units. g o I 1 2 a 4 a 6 7 'l s 9 i V 0 0 0 0 '0 0 o F 0 0 0 0 1.. o 1 2 a 4 a l 6 7 8 9 2.. 0 2 *4 a s 10 2 4 6 s 3.. 0 a s a- 2 5 a 1 4 7 4. 0 4 s 2 a o 4 s 2 a 5. 0 5 o 5 o 5 o 5 0 .5 t. o a a a 4 0 6 =2 8 4 '1. 0 7 4 1 s 5 2 a 6 a 8.. 0 s 6 4 z 0 s e 4 a 9 0 9 8 7 6 5 4 a 2 1 The-form shown in the drawings consists of a series of steel disks called templets with slots cut in their peripheries to correspond with the figures in the foregoing,

table.-

The units templet has the measured lengths shown in Table A, a tens templet the lengths shown in Table B. Each templet is provided with a feeler which is some mechanical arrangement for measuring the lengths presented to it by the corresponding templet and for transmitting the said length to another portion of the mechanism for the purpose of addition. Each group is so arranged that by setting its templets relative to its feelers in a position determined by the two factors of the partial product, the feelers are then made to engage with the templets and transmit the measu ed lengths corresponding to that product.-,;. l

Taking the units templet"A the n bers in Table A can be written 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, s, 4, 5, 6, 7, s, 9, 0,

the lengths being arranged side by side in a line, or around a circle in ten groups of ten numbers each. The feeler will then select a certain group and a certain position in a group. Thus to multiply 3 by 6 the feeler will select the third group and the sixth number in the group, reckoned from the initial or zero groups and positions respectively, and Will feel the number 8 in the units division and the number 1 in the tens division. i

Each templet is set by means of a movement representing an X digit, compounded with a movement representing a Y digit, and we provide means for supplying. these movements to the templets simultaneously, by means of a differential pull on a pulley connected to the templets as hereinafter described.

In order that the various feelers in a column may simultaneously add their motions it is necessary to provide an arrangement in the machine by which all these motions can be added simultaneously. For addingithe motions in a given column we arrange a wire, cable or tape, passing around .a numberof pulleys of which every alternate one is suitahy mounted on the ire me of the part corresponding to each column.

and over a sum pulley, the movements of which will be equal to the added movement-s of the feelers of that particular column.

The pulleys for any particular column are preferably arranged to move in a vertical plane, for which purpose the feelers are mounted on a pair of spindlesv parallel to the axis of the templets, and the end of each feeler is a circular are having its center on the axis of the spindle. Each feeler has its corresponding pulley suspended by a wire or tape in contact with its circular end. The

.ends of the wire passing over the various feeler pulleys and over the sum pulley may be fixed to the frame, or the said wire may be an endless loop, two or more guide pulleys as found necessary mounted on the frame being added to the system. In any case, the arrangement of the wave wire, as it may be called, is such that each straight portion passing from one pulley to another is vertical, whatever he the position of the feelers and their dependent pulleys. The additions of the various columns are therefore represented in the machine by a definite 6, 8, 0, 2, 4, 6, 8, 0, 3, 6,9, 2, 5, 8, 1, 4, 7, etc.,

movement of a part of the machine, one such For convenience of description these movements are. called column pulls, although there is no need for the motion to be a pull, as it can also be a push, or a twist or a rotation. It is clear that if the pulls thus produced by adding the various feeler movements are transferred to the wheels of an indicating mechanism, arranged with a wheel corresponding to each column, and provided with carrying arrangements in the usual manner, that The final. total. will be correctly indicateqj by such wheels. It will be seen however.- that a considerable amount of carryingunay be necessary, and as this involves a number of rotations of the indicating wheels, it may be desirable if possible to avoid such carrying. By our invention we are enabled to avoid such carrying, or at any rate to largely reduce it in the following way Instead of transferring the column pulls direct to the indicating mechanism we may arrange that each column pull shall operate to position a secondary templet. The function of each templet is to convert the movement of the column sum pulley rs far as possible.- into termsof a hi li'ei denominamediately to the left is 40 units, the two templets of the corresponding column group of templets are rotated or otherwise positioned through 46 units, and in this position the tens and units templets present the measured length 4 units and 6 units to their respective feelers. The 5-units movement from the tens feelers of the first mentioned column templet group has to be added t0 the six units movement from the units feeler of the column templet group immediately to the left, and the sum transmitted to the indicating or answer wheels or type wheels as they are hereinafter called. It will be seen that in no case is it necessary to carry more than 1 from any column to the next column to' the left. Thus the type wheels can be numbered around their circumference 0, 1, 2, 3, 4, 5, G, 7, 8, 9, 0, 1, 2, 3, 4, 5, as far as may be necessary for any particular type wheel. If any type, wheel is rotated beyond the number 9., arrangements are made so that the next type wheel to'the left is advanced by unity. Thus it will be seen thatno indieating or type wheel ever makes a complete revolution. This is a great advantage as the resetting of the type Wheels is greatly simplified thereby and Wear is reduced to aminimum.

The processes gone through in the machine may be summarized as follows :1. The multiplier and'multiplicand are set up,

thereby setting the templets in position. 2.

The templets are measured or felt, thereby causing a column pull to set each secondary templet. The secondary templets are felt, thereby causing a measured pull on the indicating wheels, which are advanced or not by unity according as the wheel to the right has passed the 9 position or not.

The accompanying drawings illustrate a machine constructed in accordance with this invention certain parts, which are merely constructional and have no bearing on the features of the invention, being omitted for the sake of clearncss.

In these drawings, Figure 1 is a front elevation of the machine showing mainly those parts of the mechanism which lie toward the front. Fig. 2 is a similar elevation showing those parts of the mechanism which. lie 'to- I larl than the diameter of the pulley 7.

ward the back of the machine. In full front elevation the parts shown in Fig. 1 would appear superimposed on the parts shown in Fig. 2. Fig. 3 is an end elevation.

Like letters indicate like parts throughout the drawings.

The machine hereinafter more particularly described and illustrated is intended for calculating the value of any number of articles up to 9999 at any price ranging from 1/16th of a lii/ltiths' of a penny.

The digits of the multiplier and of the multiplicand are set up by means of handles 1, 1; on bell crank levers 2. These handles, which in the present machine are eight in number, are disposed in two groups of four the handles 1 in one of these groups 'being intended for controlling or setting up the price while the handles 1' in the other group are intended for setting up a quantity. All these handles work inslots 15 cut-in a suitable cover 99 mounted on the frame 99. Each bell-crank lever 2 for setting up a price-carries a circular arc-3 while each bell-crank lever for setting up a quantity carries a circular are or quadrant 6 the latter being of smaller radins'than the circular arcs3. To the circular arcs 3 are attached wires 3 which run to and pass around pulleys or drums lmounted on shafts p, Q, r, s. The arcs 6 are similarly connected by wires 6 with pulleys or arms 7 mounted on shafts a, b, a, (Z. Thus by moving one of the handles 1 and setting it in accordance with a digit representative of price oneof the pulleys 4 will be rotated to an amount corresponding to that price digit. Simiif a handle 1 is moved and set in accor ance with a digit representative of ,quant-ity one of the pulleys 7 will be re tate'd to an amount corresponding to that :quantity digit. Tare"'s uitably engraved with numbers and mechanism is provided for retaining each f'l'ever in any position in which it isset such mechanism being of any suitable type but =-not being The edges of the slots 15 indicated in the drawings. Mounted on each shaft p, 9,7 s, are four pulleys 5 the diameterof each of which is larger than that of the pulley 4.. Mounted on each of the shaftslz, b, 0, (l, are four pulleys 8 the diameter of each of which is less The pulleys 5 and 8 are arranged in pairs so that one pulley 5 and one pulley 8 making up a'pair lie in one and the same vertical plane the arrangement being shown in Fig. 7 1. A wire 9 which passes over a pulley 10 has its ends connected respectively to a pulley 5 and a pulley 8 forming one of these pairs and the pulleys in each pair are similarly connected. Each pulley 10 is suspended by a wire 11 from a pulley 12 which may be termed a primary templet pulley.

penny up to 19.19.11

This wire 11 may be either connected to and wound on this pulley 12 or may pass over it in.the manner indicated in Fig. 3 the end of the wire 11 in this case being wound on a spring controlled drum 14. The latter tend to maintain in tension the Wires 11 and 9 and the Wires 3- and 6 leading from the setting levers 2. The setting of a l1andie 1 and a handle 1 will result in each end of a wire 9 being let out and this will cause rotation of a primary templet pulley- 12. Owing to the relative dimensions of the radii of the circular arcs 3 and 6 and the relative diameters of the pulleys 4t and 5 and of the pulley wheels 7 and 8, that end of the wire 9 which is connected to a price pulley 5 will be let out by large increments while the end of the wire 9 which is connected to a quantity pulley S will be let out by relatively small increments. The extent to which a primary templet pulley '12 is rotated as a result of letting out the ends of a wire 9 in the manner described, will be a measure of the product of multiplying together the price at which the handle 1 has been set and the quantity-at which the handle 1 has been set which setting has resulted in the letting out of the ends of the wire 9.

The normal position of the handles 1 and 1 is at zero the position of the corresponding primary templctpulleys 12 being conscquently also at zero.

Each primary templet pulley 12 is connected to one or more primary templets S which form agroup of these templets, the templets in this group and the corresponding pulley 12 being conveniently mounted on a sleeve 13. All these sleeves 13 with the pulleys 12 and groups of templets S carried by them are freely rotatable. on a ('UHHHU'II shaft 99".

A series of lovers 1* constituting feelers are arranged in two sets one set pivoted on a shaft 21 being disposed above the groups of templets S while the other set pivoted on a shaft 21 is disposed below the groups of templets S. There a feeler l for each templet S each feeler having a pin 22 which is adapted to enter and feel the depth of any slot in its corresponding templet according to the rotary positioning of this templet;

The templets are spaced far enough apart from each other to allow the feelers F to move between them. The slots in the templets are cut to circular arcs having their centers at the'axis of oscillation 21 or 21 of the feelers. The templet S shown in Fig. 3 has its slots cut to correspond with one of the up er feelers F.- The objectin disposing some of the feelers below andsome above the templets is to economize space.

The end of each feeler remote. front its axis-of oscillation 21 or 21' is acircular. arc tolwhich is connected a wire 23 at the end of which is suspended a feeler pulley 24:. -In Fig. 2 are shown the feelers and feeler pulleys 24 corresponding to the pounds column. It will be seen that five of these feelers are positioned above and four below the templets with which they respectively cooperate. A wire 25 haying its two ends suitably fastened to the frame 99 passes over the various feeler pulleys 24 and over a pulley 26 which may be termed the sum pulley. The sum pulley 26 supports a wire 27 which passes overa secondary templet pulley 28 another wire 29 or a continuation of the wire 27 extending from the periphery of the pulley 28 to a spring controlled pulley 30 by means of which the necessary tension is maintained in these wires. The feeler pulleys 2+t, the sum pulley 26, the wire 25 and the wire 27 all lie in the same vertical plane. .his group of nilleys' such as the pounds group shown in Fig. 2 constitutes the means by which are added together the several partial products ascertained by the feelers F from the primary templets S with which they respectively cooperate. The corresponding adding system for each of the other columns or values such as the shillings and pence each lie in separate parallel planes as indicated in Fig. 3 by the dotted lines 2 For this purpose the circular arc ends of the feelers F are made of radii to correspond with the particular plane of the corresponding column addition system the radii of the secondary tcmplet pulleys 28 being proportioned to counteract the inequality so produced. I

The feelers F are normally held away from the primary teinplets S in the positions shown in Fig. 3 by means of two control rods 31 on which the feelers rest. The ends of each red 31 are suspended by two radius bars 32, each pair of radius bars being suitably mounted respcctively on the shafts 21 and 21. Toggle links 33 are jointed to the ends of the radius bars 32 and to the end of a. bell-crank lever 34 which is mounted so as ,to roeit on the shaft 35. The wires 23, 27 and 2!) being under tension fronrthc spring pulley 30 it will be clear that if the bell (2 anti lever 31 is moved to the right the two feeler control bars 31 will move toward the axis of the templets S and eonsemiently all the feelers F will be pulled toward these l'emplets until the feeler pins 22 come to the bottoms of the slots presented by their respective templets.

Each secondary templet group has two templets though for hundreds of pounds only one templet may be needed. In each case the two templets and the corresponding pulley 2h are mounted on a sleeve 36 so that they all turn together and all the groups are mounted so as to be capable of inde endent rotation on a. common shaft 99 sinta ly fastened to the frame. Each secondary templet C is provided with a feeler 41 which carries a feeler pin 42. The outer end of each feeler terminates in a circular arc while the other end is formed as a boss 43, the bosses of all the feelers 41 being mounted and freely rotatable on a common shaft 99. The feelers 41 are held inoperative by means of a rod 61 carried on the ends of levers 62 pivoted conveniently on the same axis as but independent of the lever 34'. i

To the are shaped end of each feeler 41 is attached the end of a wire 45. Each of these wires 45 passes around a pulley 46 sus pended from the end of a wire 47 leading to an indicating wheel or segment. the arrangement being such that the, feeler movements after the positioning of two secondary templets having the same denomination or value are added and transmitted to the indicating wheel or segment by the wire 47. A modification of this arrangement occurs in connection with the secondary templet which dealswith fractions of a penny which templet is shown at the; right hand side of Fig. 2. Here one end of the wire 45 is attached to the frame 99, the other end being connected to the feeler 41 for this secondary templet. Were it not for the unit carry the movement of each wire 47 might be transferred direct to the appropriate answer wheel 55 but this movement, has often to be increased by unity, The various an-' swer wheels 55 must necessarily lie sideby side on a common axis suitably mounted on the frame as indicated in Fig. 1. Each wire 47 asin the construction illustrated in Figs. 2 and 3 may therefore have to be led over two guide pulleys 48 and over two other guide pulleys 53 and 54 shown in Fig. 3 on its Way to the answer wheel 55.

The various guide pulleys'53 for all'the wires'47 of the various secondary templets may be mounted on a common axis. Similarly the various guide pulleys 54 may be mounted a common axis but it is not usually possible to mount the various g'uide pulleys 48 011 21 common axis.

A view window 56 formed in the casing 99 attached to the frame enables the operator to see the appropriate figure on the answer wheels. From each answer wheel a wire 57 is led to a spring controlled pulley 58 mounted on the frame 99. As the wires 45, 47 and 57 are under tension produced by the spring controlled pulley 58, when the various feelers 41 are allowed. to approach their respective secondary teinplets C the answer wheels 55 move into their appropriate positions the correction necessary for the transfer of unit carry having then to be effected. The mechanism by which the transfer of unit carry is effected may be in any one of the forms at present well known such mechanism not forming any part of the present invention.

After the digits of the multiplier and multiplicand are set up by movement of the handles 1 and 1 the movements of the primary templet feelers F, of the secondary templet feelers 41 and of the indicating wheels 55 to their proper positions are performed by means of the mechanism already described when the operator pulls the operating handle 65 toward the front of the machine. This handle is fixed to the end of the double-armed lever 66, 67 suitably mounted on the frame. Jointed to the end 67 of this lever is a connecting link 68 the other end ofwhich is jointed at 69 toa slotted cam 70 pivoted to the frame at 99 The cam surface consists of two arc-shaped slots 71 and 72 of different radii united by an inclined part 73. calculating position of the operating han- 'dle"65 two pins 75 and 76 respectively fixed to or integral with the bell-crank lever 34 and the lever '62 rest in that portion 72 of the cam slot which has the larger radius. O'Ii pulling the operating handle to the front the pin 75 is forced to slide up the inclined surface 73 theconsequent raising of the pin 75 moving the lever 34 in the diinward toward the primary templets S. This results in thesecondary templets 0 taking up their appropriate positions in the manner already described. During the lat- 'ter part of the forward movement of the operating handle .65; the pin 75 having moved 1I1t0. that slot 71 which has the sitions clear of the secondary te'mplets C and resetting the indicating wheels to zero- I and then setting the feelersF into their normal positions clear of the primary templets S. The setting handles 1 and 1 can then be placed at zero or moved into the necessary positions to carry out a newcalculation.

In operating the machine the first process will be to pull or set the handles or keys corresponding to the price three shillingscand fourpenc'e and thenthe handles corresponding to the number 25. The initial result of setting these several handles may" be detailed. By setting the pence handle at four- In the normal non pence the wire connecting the lever,2 to the drum on the shaft 1- is let out thereby per- I'nitti'ng rotation of the shaft r together reaction which permits the feelers F to move 10"0' smaller radius the lever 34 remains stationsetting the feelers 41 into their normal powith each of the pulleys 5 mounted thereon to the extent of four increments each equivalentto one penny. This will cause that end of each wire 9 which is connected to a pulley 5 on the shaft r to be similarly 'let out to the extent of four penny increments. In consequence of the wires 9 being let out each pulley 10 will rise to a corresponding extent and each primary templet group S will be rotated so as to position each templet in this group in readiness to present to its feeler the division corresponding to the price of each article. For example in the case in question the first primary templet in the pence groupwill be turned until the feeler is in the zero position at the commencement of the division which is graduated or slotted for the price of O to 9 articles at four pence each. The feeler at this sta ey will be opposite the zero point in this vision of the templet because no quantity handle has so far been moved. In other words the templet in question is set for the price of 0 articles'at fourpenee each. It will be understood that, by setting the shillings price handle at three shillings a similar op-- eration will be performed the shaft 9 being rotated as a result of letting out one of the wires 3* and the rotation of this shaft 9 will cause rotation of the pulleys or drums 5 thereon causing letting out of the ends of the wires 9 connected thereto. Positioning of certain primary templets will then take place one of these templets for example being set with its feeler opposite the zero position of the division of the templet corresponding to O to 9 articles at three shillings each. One of the quantity handles is now set at 5 with the result that one of the wires 6 is let out to the extent of five increments causing rotation of the shaft b together with the pulleys 8 thereon. This will bring about the letting out to the extent of five' increments of the other ends of certain of the wires 9 and the consequence will be a further rising 'of each of the pulleys 10 around which each of these wires 9 passes and a further setting of each of the primary templets S in a roup controlled by the pulley 10. Thus in the case of the pence tem-- plet already referred to as having been set in the position for 0 articles at four pence this templet will be rotated five steps, so as to bring opposite to its feeler pin 22 the slot corresponding to the price of five articles at fourpence,.that is to say one shilling and eightpence. The slot in this templet pre sented to the feeler will only allow the feeler to move a distance correspondingto the sum of eightpence the shillings templet in the same group being positioned for its feeler to move when released to theextetgt stone shilling. -In the same way the other templets which have been partly positioned as already described as a result of setting the price handle at three shillings will -receive further movementso that five times three shillings that is to say fifteen shillings will be felt on the shillings templet when the feeler is released. Finally the quantity handle for twenty will be set and the shaft 0 rotated to the extend of twenty increments the result being the setting ofprimary templets for twenty articles at fourpence that is to say six shillings and cightpenee and for twenty articles at three shillings that is tosay three pounds. The following multili'catiou sums will then have been satisfactorily performed by the machine:

"(1.) 5, articles a id 1s.8d. (2.). 20 articles at 4td 6s. 8d. (3.) 5 articles at 35 15s. 0d.

(4.) 20 articles at 3. 0s.,0d.

The total of these several sums when added together amounts to 3. 22s. 16d. and is arrived at and dealt with after the feelers are in operation as hereinafter described.

mary templets may however be enumerated.

The actual positioni fg (if the groups bf priarenot in operation as. no fraction of a penny here considered.

The first sum (1) will be performed in positioning the second group of primary templets, the sum of 1s. being positioned on enters 1nto the sum which is being v the shillings templet in this group and the sum of 8d. being indicated on the pence templet in this group.

The second sum will be performed in po-. sitioning the third group of primary templets, no pounds being positioned on the pounds templet, the sum of 6s. being positioned on the shillingstemplet and the sum of 8d. being positioned on the pence templet. The third sum will be performed in positioning the fourth group of primary templets no pounds being positioned on the pounds templet and the sum of 15s. being positioned on the shillings templet. The fourth sum will be performed in positioning the fifth group of primary templets. no poundsbeing positioned on the tens of pounds templets, 3. being positioned on-the unit pounds templet and no shillings being eelers are now brought into operation and sascertain from the positioned primary tem- ,plet groups the several products of these sums. The movement of the feelers causes movement in the several pulley groups with the result that addition takes place inthese groups. In the first group ofpence pulleys the 4 addition of the pence is performed, the total being sixteen pence and the first group of secondary templets is positioned to indicate 1s. ed.

ositioned on the ten shillings templet. The

In the second group of shillings pulleys the additions of the shillings is performed, the total being twenty two shillings and the second group of secondary templcts, is positioned to indicate 1. 2s.

In the third group of unit pounds pulleys there is no addition to be performed but a letting out of the tape passing over this group of pulleys takes place corresponding to the sum of and the third group of secondary templets is positioned to indicate 3. F eelers are now brought into operation on the secondary templet groups and the pence feeler sets the answer wheel at 4d. The shillings feeler in the first group of secondary templets indicates 1s.and the shillings feeler n the second group of secondary templets indicates 25. with the result that the tape connected to the shillings answer wheel is let out to an extent such as to position that answer wheel at 33. Similarly the pounds 'feeler in the second group of secondary ternplets indicates 1. while the unit pounds feeler in the third group of secondary templets indicates 3. with the result that these figures are added together and the unit pounds answer wheel is positioned at 4. v,

Thus the answer is presented on' the 7 answer wheels as 4. 3s. 4

What we claim as our invention andfdesire to secure by Letters Patent is 1. In aralculating machine the'colrihination of a series of primary templets disposed in groups, means for positioning each group in accordancewith the partial products of sums determined by setting means,. feelers adapted to ascertain the amounts represented by the positioned primary templets, a series of secondary templets' disposed in groups,means for adding theamounts ascertained by the primary feelers and for sitioning the secondary templets in accord- I q WhlCh 1s apulley, a tape passing over each" ance with the resultant sums so ascertained and means for. setting a series .of answer wheels in accordance with the amounts rep resented by thepositioned. secondary-tern plets. a 2. In a calculating machine the combination of a series of primary templets disposed in groups, means for positioning each-"group in accordance with thepartial products of sums determined by setting means, feelers adapted to ascertain the amounts represented by the positioned primary templets, a series of secondary templets disposed in groups, ase'ries offjpulley groups each group being composed ofjone or more pulleys. each connected to a primary templet'feeler and a pulley connected to a group of secondary templets, a series of tapes the endsof (which are fixed,each tape passing aroupfl-all-the pulleys in a group and means fol-settings series of answer Wheels in accordance with the amounts represented by the p ositioned secondary templets.

3. In a calculating machine the combination of a series of primary templets disposed in groups each group adapted to be positioned by means of a tape on theend of whichlis a pulley, a tape passing over each of these pulleys and having each end con nected to a rotatable device, means for rotating each such device toan extent to the value of an operated key, a series of keys,

means for feeling the primary templets when positioned, means for adding together the amounts ascertained by the feelers and means for communicating the result so ob- Jtained to a series of answer wheels.

amounts represented by the positioned sec-.

ondary" templets, ,means for adding the amounts ascertained by the primary feelers and for positioning the secondary templets i-i'r accordance with th'resultant sums, a series of answer wheels, pulleys connected to certain of the answer wheels, tapes connect iiigfcertain secondary, feelersto their corresponding answer wheels and other tapes severally running over answer ,w'heel pulleys and serving to connect, certain secondary feelers so as to add-the amounts ascertained by them and cause the correspondinganswer wheels tobe set in accordance with-theresult of such addition. 1

5. In a' calculating machine the con'lbifiat-1 p tion of aseries of primary templets disposed,

in groups, each group adapted tobeposr'a tinned by means. of 'a tape on the end of "ing each such device to an extent propor-e tiona-l to the value of an operated key, afse- 'ries of keys, feelers adapted to ascertain the amounts represented bythe positionehl 'primary templets, a series of secondary templets disposed in groups, means for. adding the amounts ascertained by the primary feelv ers and-for positioning the secondary tem- .plets in accordance with the resultant sums and means for setting a series of answer 'wheels in accordance with the amounts represented by the positionedsecondary temlets. p 6. In a calculatingmachine the combination of a series of primary templets disposed in groups each group adaptedto be posiwhich is a pulley, a tape passin'g over each of, these pulleys and having each end con; nected to a rotatable device, means for retating each such device to an extent proportional to the value of an operated key, a series of keys, feelers adapted to ascertain the amounts represented by the positioned primary templets, a series of se cond-.

ary templets disposed in groups, a series of pulley groups each group being composed of one or more pulleys each connected to a primary templet feeler and a pulley connected to a group of secondary templets, a series of tapes the ends of which are fixed each tape passing around all the pulleys in a group and means for setting a series of answer .wheels in accordance with the amounts represented by the positioned secondary templet-s.

7. In a calculating machine the combination of a series, of primary templets disposed in groups means for positioning each group in accordance with the partial products of sums determined by setting means, feelers adapted to ascertain the amounts represented by the positioned primary templets, a series of secondary templets disposed in groups, feelers adapted to ascertain the amounts represented 'by the positioned secondary templets, a series of pulley groups each group being composed'of one or more pulleys each connected to a primary templet feeler and a pulley connectedto a group of secondary templets, a series of tapes the ends of which are fixed, each tape passing around all the pulleys in a group, a series of answer wheels, pulleysconnected to certain of the answer wheels, tapes connecting certain secondary feelers to their corresponding answer wheels and other tapes severally running over answer wheel pulleys and serving to connect certain secondary feelers so as to add the amounts ascertained by them and cause the corresponding answer wheels to be set in accordance with the result of such addition.

8. In a calculating machine the combination of a series of primary templets disposed in groups each group adapted to be positioned by means of a tape. on the end otwhich is a pulley, a tape passing over each of these pulleys and having each end connected to a rotatable device, means for rotating each such device to an extent roportional to the value of an operated ey, a series of keys, fpelers adapted to ascertain the amounts represented by the positioned primary templets, a series of seconoary templets disposed in grou s. feelers adapted to ascertain the amounts represented by the positioned secondary templets, a series of pulley groups each group being composed of one or more pulleys each connected to a primary templet feeler and a pulley connected to a group of secondary templets, a series of tapes the ends of which are fixed each tape passing around all the pulleys in a group, a series of answer Wheels,

pulleys connected to certain of the answer wheels, tapes connecting certain secondary feelers to their corresponding answer wheels and other tapes severally running over answer wheel pulleys and serving to connect certain secondary feelers so as to add the amounts ascertained by them and cause the corresponding answer wheels to be set in accordance with the result of such addition.

9. In a calculating machine the combination of a series of keys of which some designate price and others designate quantity, rotatable devices corresponding to the price keys each of such devices being constructed to increase the movement transmitted through it, rotatable devices corresponding to the 'quantity keys each of such devices being constructed to increase the movement transmitted through it, means for rotating each such device to an extent proportional to the value of an operated key, a series of primary templets disposed in groups each templet adapted to be positioned by means of a tape on the end of which is a pulley, a tape passing over each of these pulleys and having one end connected to one of the rotatable devices controlled by a price key and the other end connected to one of the rotatable devices controlled by a quantity key, feelers adapted to ascertain the amounts represented by the positioned primary templets, a series of secondary templets disposed in groups, means for adding the amounts ascertained by the primary feelers and for positioning the sec ndary templets in accordance'with the resultant sums and means for setting a series of answer wheels in accordance with the amounts represented by the positioned secondary templets.

10. In a calculating machine the combi nation of a series of keys of which some designate price and others designate quan tity, rotatable devices corresponding to the price keys each of such devices being constructed to increase the movement transmitted through it, rotatable devices correspondingto the quantity keys each of such devices being constructed to decrease the movement transmitted through it,- means for rotating each such device to an extent proportional to the value of an operated key, a series of primary templets disposed in groups each templet adapted to be positioned by means of a tape on the end of which is a pulley, a tape passing over each of these pulleys and having one end connected to one of the rotatable devices controlled by a price key and the other end connected to one of the rotatable devices controlled by a quantity key, feelers adapted to ascertain the amounts represented by the positioned primary templets, a series of secondary templets disposed in groups, a series of pulley groups each group being composed of one or more pulleys each connected to a primary templet feeler and a pulley connected to a group of secondary templets, a

ed to increase the movement transmitted through it, rotatable devices corresponding to the quantity keys each of such devices being constructed to decrease the movement transmitted through it, means for rotating each device to an extent proportional to the value of an operated key, a series of primary templets disposed in groups each templet adapted to be positioned by means of a tape on the end of which is a pulley, a tape passing over each of these pulle s and having one end connected to one 0 the rotatable devices controlled by a pricekey and the other end connected to one of the rotatable devices controlled by a quantity key," feelers adaptedto ascertain the amounts represent- Copies of this patent may be obtained for five cents each, by addressing the ed by the positioned primary templets, a series of secondary templets disposed in groups, feelers adapted to ascertain the amounts represented by the positioned secondary templets, a series'of pulley groups each group being composed of one or more pulleys each connected to a primary templet feeler and a pulley connected to a group of secondary templets, a series of tapes the ends of which are fixed, each tape passing around all the pulleys in a group, a series of answer wheels, pulleys connected to certain of the answer wheels, tapes connecting certain secondary feelers to their corresponding answer wheels and other tapes severally running over answer wheel pulleys and serving to connect certain secondary feelers so as to add the amounts ascertained by them and cause the corresponding answerwheels to be set in accordance with the result of such addition.

In witness whereof we have hereunto set our hands in the presence of two witnesses.

MARK BARR. EDXVARD RUSSELL CLARKE.

Witnesses:

JOHN M. HADnooK, ARCHIBALD SHARP.

" Commissioner of Patents,

Washington, D. G. 

